Safety-clevis



J. E. KNG AND B. MORGAN'.

SAFETY CLEVIS. APPLICATION FILED JULY e. 1920.

1 387 '781, Patented A118. 16, 1921.

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l. E. KING AND B. MORGAN.

SAFETY CLEVIS.

APPLICATION FILED IULY s, I92o.

1,387,781. Patented Aug. 16, 1921.

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IIIIII iol Dlnk JOSEPH EDGAR KING, 0E NANTYEFYLLON, NEAR BRIDGEND, AND BENJAMIN MORGAN, 0E CAERAU, ,NEAR BRIDGEND, WALES.

SAFETY-CLEVIS.

Specification of Letters Patent.

Patented Aug. 16, 1921.

To @ZZ whom tmag/ concern Y Be it known that we, JOSEPH EDGAR IUNG, residing at 21 Humfray street, Nant-ytfyllon,

near Bridgend, South lVales, and BENJA MiN MORGAN, residing at 18 race, Caerau, near Bridgend, subjects of the United ingdom ot Great ritain and Ireland, have invented a new and useful Safety-Clevis, of which the` folowing is a specication.

ur invention relates to improvements in shackles or couplings for connecting cars. used for the conveyance of minerals mines, in which a movable pin forms the vertical part of a D link, the engagement or disengagement of the shackle beingformed by the loweringr or lifting of the said pin respectively; and the objects of our improvements are first, to prevent the accidental lifting of the pin by providing a locking device in the lower eye of the shackle acting in conjunction with a special form o"r` annular recess on the base of the pin; second, to secure rapid disengagement of the shackle by allowing the pin to be lifted in. all positions, and third, to allow of adjustparts that may The D link may be used in conof like construction` an oval ring, or a drawbar. lVe attain these objects by means of themechanism illustrated in the accompanyingdrawings, which refer to the D link, only, in which,

igure l is an elevation ot the D link complete (half full size).

Fig. 2 is a view of the lower eye of the shackle from underneath with the mechanism in place.

ig. 3 is an end elevation of the D link with the eyes in section.

ig. 4 is a view of the base-plate.

ig. 5 iS av view of the rivets which hold the locking in place.

Fig. 6 is a view of the flat springs.

Fig. is a view of the part of the lock and of the adapters.

Fig. 8 is a view of the spiral springs.

l he pin 1 provided with a link 2 `for l1'l'ting, works eely in the round eyes oi the i 3, and is prevented from rising too high by the projection 4. The base of the pin is recessed at 5, and tapered at 6.

e lower portion of the eye 7. is bored to receive the lock 8. The lock 8 consists of two halves, which when assembled are square shaped with projecting rounded Glenavon Ter- South lVales,

shoulders 9 at each corner. These shoulders 9 are bored and tapped to receive the adapters 10. Spiral springs ll draw the parts ot together, and these springs 1l are threaded throughholes in the the hollow adapters l0, which have right screw threads respectively as shown. esc springs 11 vork in the grooves 12, at the sides of the lock 8. In the center of theelock 8 is an elliptical opening, countersunk Jfrom both sides to lit the recess 5 on the pin 1. Flat friction springs 13, bent as shown, working on the rivets 14., (which are shouldered to avoid projecting beyond the case 7) and guided by the spindles 15, assist in keeping the lock 8 closed in the proper position. Tl place by means which pass through the adapters 10, and the spiral springs 11. 1e openingat the bottom of the eye 7 is closed by a screwed plate 1G, with counter- Recesses 7 are provided for easy opening, while the set screw 18 keeps the plate 1G in place.

"le are aware that prior to our invention.

D links for shackles have been made with a movable pin forming the vertical part oi the D link.

lVc therefore do not claim such nation broadly, but we claim l. The combination, in the D links ot' a shackle for mine cars, ol the recessed and tapered pin l, with the bored and countersunk lock 8, housed in the lower eye T ol the shackle, substantiall.7 as specified.

Q. kn a. shackle the combination ot' the adapters l0, to which are fixed the spiral springs 11, with the lock S, substantialliT as described. n

3. In a shackle the combination of the flat friction springs 13 with the lock 8, substantially :is describec.

4. The D link oi' a lshackle having a recessed and tapered pin 1, conci-,ing with a. ored and countersunk lock 8 which is normally kept closed by the spiral springs 11., and the adapters 10, und kept in position with the assistance ofthe friction springs 13.

JOSEPH EDGAR KING. BENJAMIN 15 MORGAN.

mark

a combil/Vitnesses: EDWIN H. LoNG, FLORENCE H. Lima. 

